Identification of Volatile Compounds (VCs) in the Leaves Collected from ‘Gemlik’, ‘Halhalı’ and ‘Sarı Hasebi’ Olive Tree Varieties

Year 2017, Volume: 4 Issue: 3, Special Issue 1, 195 - 204, 25.11.2017

Ahmet Dursun , Zehra Güler Dilek Özkan Dilşat Bozdoğan Konuşkan

https://doi.org/10.21448/ijsm.370128

Cited By: 7

Abstract

There is a considerably interest on some fruits and leaves extracts such as olive leaf, due to their beneficial health effects. Olive leaf has been consumed as tea for many years. However, the studies on volatile compounds (VCs) of leaves are scarce. Therefore, this study was aimed to evaluate of VCs in the leaves collected from ‘Gemlik’, ‘Halhalı’ and ‘Sarı Hasebi’ olive trees varieties grown in Hatay province. The VCs were analyzed by gas chromatography-mass spectrometry (GC-MS) using solid phase micro-extraction (SPME). The 97 out of 127 VCs identified were found common in all the olive leaves. Terpenes, aldehydes, alcohols and ketones were identified in the olive leaves as major VCs groups, which accounted for about 36-60%, 20-28%, 6-14% and 4-8% of total VCs identified in leaves, respectively. The relative proportions of these chemical groups showed considerably differences among olive leaves. α-Cubebene was found as major VC followed by trans-caryophyllene, α-farnesene, trans-2-hexenal, benzeneethanol, nonanal, trans,trans-2,4-heptadienal, cycloisosativene, trans-4,8-dimethyl-1,3,7-nonatriene, 2,4-heptadienal, α-humulene, α-muurolene and benzaldehyde. These compounds accounted for 56-75% of total VCs identified in the olive leaves. While ‘Halhalı’ olive leaf had highest (p<0.01) levels of α-cubebene (31.79%), cycloisosativene (7.69%) and α-muurolene (4.05%), ‘Sarı Hasebi’ had trans-caryophyllene (23.16%), trans-4,8-dimethyl-1,3,7-nonatriene (4.65%), α-humulene (3.64%) and ‘Gemlik’ had benzeneethanol (6.93%), nonanal (5.07%), and benzaldehyde (2.17%) at the highest levels. This study has showed that olive leaves from each variety are a good terpene source that makes them important in terms of beneficial effects on health.

Keywords

Olive tree leaves, Volatile compounds, Gemlik, Terpenes

Identification of Volatile Compounds (VCs) in the Leaves Collected from ‘Gemlik’, ‘Halhalı’ and ‘Sarı Hasebi’ Olive Tree Varieties

Abstract

There is a considerably interest on some fruits and leaves extracts such
as olive leaf, due to their beneficial health effects. Olive leaf has been
consumed as tea for many years. However, the studies on volatile compounds
(VCs) of leaves are scarce. Therefore, this study was aimed to evaluate of VCs
in the leaves collected from ‘Gemlik’, ‘Halhalı’ and ‘Sarı Hasebi’ olive trees
varieties grown in Hatay province. The VCs were analyzed by gas
chromatography-mass spectrometry (GC-MS) using solid phase micro-extraction
(SPME). The 97 out of 127 VCs identified were found common in all the olive
leaves. Terpenes, aldehydes, alcohols and ketones were identified in the olive
leaves as major VCs groups, which accounted for about 36-60%, 20-28%, 6-14% and
4-8% of total VCs identified in leaves, respectively. The relative proportions
of these chemical groups showed considerably differences among olive leaves.
α-Cubebene was found as major VC followed by trans-caryophyllene, α-farnesene, trans-2-hexenal, benzeneethanol, nonanal, trans,trans-2,4-heptadienal,
cycloisosativene, trans-4,8-dimethyl-1,3,7-nonatriene,
2,4-heptadienal, α-humulene, α-muurolene and benzaldehyde. These compounds
accounted for 56-75% of total VCs identified in the olive leaves. While
‘Halhalı’ olive leaf had highest (p<0.01) levels of α-cubebene (31.79%),
cycloisosativene (7.69%) and α-muurolene (4.05%), ‘Sarı Hasebi’ had trans-caryophyllene (23.16%), trans-4,8-dimethyl-1,3,7-nonatriene
(4.65%), α-humulene (3.64%) and ‘Gemlik’ had benzeneethanol (6.93%), nonanal
(5.07%), and benzaldehyde (2.17%) at the highest levels. This study has showed
that olive leaves from each variety are a good terpene source that makes them
important in terms of beneficial effects on health.

Keywords

Olive tree leaves, Volatile compounds, Gemlik, Terpenes

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